Light-emitting gallium nitride-based compound semiconductor device
Patent Abstract / Summary
A light-emitting gallium nitride-based compound semiconductor device of a double-heterostructure. The double-heterostructure (22) includes a light-emitting layer (18) formed of a low-resistivity InxGa1-xN (0 < x < 1) compound semiconductor doped with p-type and/or n-type impurity. A first clad layer (16) is joined to one surface of the light-emitting layer (18) and formed of an n-type gallium nitride-based compound semiconductor having a composition different from the light-emitting layer (18). A second clad layer (20) is joined to another surface of the light-emitting layer (18) and formed of a low-resistivity, p-type gallium nitride-based compound semiconductor having a composition different from the light-emitting layer (18). <IMAGE>
IPC Classifications
Priority Claims
Designated Contracting States (4 EPC States)
Germany
(DE)
France
(FR)
United Kingdom
(GB)
Netherlands
(NL)
Parties & Representation
Applicants
Nichia Corporation
491-100, Oka, Kaminaka-cho Anan-shi, Tokushima-ken
JPNICHIA CHEMICAL INDUSTRIES, LTD.
491-100, Oka, Kaminaka-cho, Anan-shi, Tokushima-ken
JPInventors (4)
Nakamura, Shuji, c/o Nichia Chemical Ind., Ltd.
491-100, Oka, Kaminaka-cho, Anan-shi, Tokushima-ken
JPMukai, Takashi, c/o Nichia Chemical Ind., Ltd.
491-100, Oka, Kaminaka-cho, Anan-shi, Tokushima-ken
JPIwasa, Naruhito, c/o Nichia Chemical Ind., Ltd.
491-100, Oka, Kaminaka-cho, Anan-shi, Tokushima-ken
JPNakamura, Shiji, c/o Nichia Chemical Ind., Ltd.
491-100, Oka, Kaminaka-cho, Anan-shi, Tokushima-ken
JPRepresentatives / Agents
Heusler, Wolfgang
V. Bezold & Partner, Patentanwälte - PartG mbB
DEHeusler, Wolfgang, Dipl.-Ing.
Dr. Dieter von Bezold Dipl.-Ing. Peter Schütz Dipl.-Ing. Wolfgang Heusler Brienner Strasse 52, D-80333 München
DEEpping, Wilhelm
Epping Hermann Fischer, Patentanwaltsgesellschaft mbH
DEHoffmann Eitle
Patent- und Rechtsanwälte PartmbB, Arabellastraße 30
DEEpping, Wilhelm, Dipl.-Ing.
Epping Hermann & Fischer Ridlerstrasse 55, 80339 München
DEHOFFMANN - EITLE
Patent- und Rechtsanwälte Arabellastrasse 4, 81925 München
DEEpping, Wilhelm, Dr.-Ing.
Untertaxetweg 146, 82131 Gauting
DEKey Procedural Dates
Patent Oppositions
Official opposition proceedings filed against European Patent EP0599224 under EPC Article 99.
OSRAM Opto Semiconductors GmbH & Co. OHG
Wernerwerkstrasse 2, DE
Epping, Wilhelm
1999-04-22
Stephen Hogan Kingsley House
Finch Lane, GB
Hoffmann Eitle
1999-04-22
OSRAM Opto Semiconductors GmbH & Co. OHG
Wernerwerkstrasse 2, DE
Epping, Wilhelm, Dipl.-Ing.
1999-04-22
Stephen Hogan Kingsley House
Finch Lane, GB
HOFFMANN - EITLE
1999-04-22
Osram Optosemiconductor GmbH & Co. OHG
Wernerwerkstrasse 2, DE
Epping, Wilhelm, Dipl.-Ing.
1999-04-22
Stephen Hogan
2 Godolphin Road, GB
HOFFMANN - EITLE
1999-04-22
Osram Optosemiconductor GmbH & Co. OHG
Wernerwerkstrasse 2, DE
Epping, Wilhelm, Dr.-Ing.
1999-04-22
Legal Status & Event History
Official European Patent Office legal and procedural status changes recorded for this file.
| Date | Code | Event Description | Auth |
|---|---|---|---|
| 1998-09-18 | ET | FR: TRANSLATION FILED | EP |
| 1994-06-01 | AK | DESIGNATED CONTRACTING STATES | EP |
| 1998-07-22 | AK | DESIGNATED CONTRACTING STATES | EP |
| 1994-06-01 | 17P | REQUEST FOR EXAMINATION FILED | EP |
| 1996-01-31 | 17Q | FIRST EXAMINATION REPORT DESPATCHED | EP |
| 1998-08-27 | REF | CORRESPONDS TO: | EP |
| 2002-01-01 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 1998-05-27 | RIN1 | INFORMATION ON INVENTOR PROVIDED BEFORE GRANT (CORRECTED) | EP |
| 1999-06-16 | 26 | OPPOSITION FILED | EP |
| 1999-06-23 | 26 | OPPOSITION FILED | EP |
| 2000-12-01 | NLR1 | NL: OPPOSITION HAS BEEN FILED WITH THE EPO | EP |
| 2000-09-27 | R26 | OPPOSITION FILED (CORRECTED) | EP |
| 2003-05-28 | RAP2 | PARTY DATA CHANGED (PATENT OWNER DATA CHANGED OR RIGHTS OF A PATENT TRANSFERRED) | EP |
| 2003-08-01 | NLT1 | NL: MODIFICATIONS OF NAMES REGISTERED IN VIRTUE OF DOCUMENTS PRESENTED TO THE PATENT OFFICE PURSUANT TO ART. 16 A, PARAGRAPH 1 | EP |
| 2003-08-01 | NLT2 | NL: MODIFICATIONS (OF NAMES), TAKEN FROM THE EUROPEAN PATENT PATENT BULLETIN | EP |
| 2003-11-28 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2008-04-09 | 27A | PATENT MAINTAINED IN AMENDED FORM | EP |
| 2008-04-09 | AK | DESIGNATED CONTRACTING STATES | EP |
| 2008-06-02 | NLR2 | NL: DECISION OF OPPOSITION | EP |
| 2008-09-01 | NLR3 | NL: RECEIPT OF MODIFIED TRANSLATIONS IN THE NETHERLANDS LANGUAGE AFTER AN OPPOSITION PROCEDURE | EP |
| 2009-01-30 | ET3 | FR: TRANSLATION FILED ** DECISION CONCERNING OPPOSITION | EP |
| 2013-01-31 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2013-02-28 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2013-03-29 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2013-11-20 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2013-11-27 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2013-12-11 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2014-01-31 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2008-03-07 | PUAH | PATENT MAINTAINED IN AMENDED FORM | EP |
| 2005-10-05 | APAH | APPEAL REFERENCE MODIFIED | EP |
| 2003-08-07 | APBU | APPEAL PROCEDURE CLOSED | EP |
| 2003-07-25 | APBP | DATE OF RECEIPT OF NOTICE OF APPEAL RECORDED | EP |
| 2003-07-25 | APBQ | DATE OF RECEIPT OF STATEMENT OF GROUNDS OF APPEAL RECORDED | EP |
| 2002-05-09 | APAC | APPEAL DOSSIER MODIFIED | EP |
| 2002-02-12 | APAE | APPEAL REFERENCE MODIFIED | EP |
| 2002-02-06 | APAC | APPEAL DOSSIER MODIFIED | EP |
| 1998-06-05 | GRAA | (EXPECTED) GRANT | EP |
| 1998-05-06 | GRAH | DESPATCH OF COMMUNICATION OF INTENTION TO GRANT A PATENT | EP |
| 1998-01-26 | GRAG | DESPATCH OF COMMUNICATION OF INTENTION TO GRANT | EP |
| 1998-01-26 | GRAH | DESPATCH OF COMMUNICATION OF INTENTION TO GRANT A PATENT | EP |
| 1997-07-26 | GRAG | DESPATCH OF COMMUNICATION OF INTENTION TO GRANT | EP |
| 1994-04-15 | PUAI | PUBLIC REFERENCE MADE UNDER ARTICLE 153(3) EPC TO A PUBLISHED INTERNATIONAL APPLICATION THAT HAS ENTERED THE EUROPEAN PHASE | EP |
| 2008-03-07 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2005-07-29 | PLBC | REPLY TO EXAMINATION REPORT IN OPPOSITION RECEIVED | EP |
| 2005-03-18 | PLAT | INFORMATION RELATED TO REPLY TO EXAMINATION REPORT IN OPPOSITION DELETED | EP |
| 2005-03-18 | PLAY | EXAMINATION REPORT IN OPPOSITION DESPATCHED + TIME LIMIT | EP |
| 2004-07-16 | PLBC | REPLY TO EXAMINATION REPORT IN OPPOSITION RECEIVED | EP |
| 2004-03-20 | PLAY | EXAMINATION REPORT IN OPPOSITION DESPATCHED + TIME LIMIT | EP |
| 2002-10-11 | PLBP | OPPOSITION WITHDRAWN | EP |
| 2001-12-11 | PLAW | INTERLOCUTORY DECISION IN OPPOSITION | EP |
| 2000-08-11 | PLAB | OPPOSITION DATA, OPPONENT'S DATA OR THAT OF THE OPPONENT'S REPRESENTATIVE MODIFIED | EP |
| 2000-08-08 | PLBQ | UNPUBLISHED CHANGE TO OPPONENT DATA | EP |
| 2000-02-23 | PLBF | REPLY OF PATENT PROPRIETOR TO NOTICE(S) OF OPPOSITION | EP |
| 2000-01-11 | PLBF | REPLY OF PATENT PROPRIETOR TO NOTICE(S) OF OPPOSITION | EP |
| 1999-10-18 | PLBF | REPLY OF PATENT PROPRIETOR TO NOTICE(S) OF OPPOSITION | EP |
| 1999-06-18 | PLBF | REPLY OF PATENT PROPRIETOR TO NOTICE(S) OF OPPOSITION | EP |
| 1999-05-07 | PLBI | OPPOSITION FILED | EP |
| 1999-05-05 | PLBQ | UNPUBLISHED CHANGE TO OPPONENT DATA | EP |
| 1999-04-30 | PLBI | OPPOSITION FILED | EP |
| 1999-04-29 | PLAV | EXAMINATION OF ADMISSIBILITY OF OPPOSITION | EP |
| 1999-04-29 | PLBQ | UNPUBLISHED CHANGE TO OPPONENT DATA | EP |
Patent & Non-Patent Citations
Cited documents and prior art referenced in search and examination reports.
Cited Patent Documents
Non-Patent Scientific Literature (NPL)
Worldwide Patent Family
Related applications and patents in the same INPADOC worldwide family.
| Country | Publication Number | Kind | Publication Date | Action |
|---|---|---|---|---|
| EP | EP0599224A1 | A1 | 1994-06-01 | Espacenet |
| EP | EP0599224B1 | B1 | 1998-07-22 | Espacenet |
| EP | EP0599224B2 | B2 | 2008-04-09 | Espacenet |
| DE | DE69319854D1 | D1 | 1998-08-27 | Espacenet |
| DE | DE69319854T2 | T2 | 1999-03-11 | Espacenet |
| DE | DE69333829D1 | D1 | 2005-07-14 | Espacenet |
| DE | DE69333829T2 | T2 | 2006-05-11 | Espacenet |
| EP | EP0844675A2 | A2 | 1998-05-27 | Espacenet |
| EP | EP0844675A3 | A3 | 1998-10-21 | Espacenet |
| EP | EP0844675B1 | B1 | 2005-06-08 | Espacenet |
| JP | JPH06260680A | A | 1994-09-16 | Espacenet |
| JP | JP2560963B2 | B2 | 1996-12-04 | Espacenet |
| JP | JPH06260681A | A | 1994-09-16 | Espacenet |
| JP | JP2560964B2 | B2 | 1996-12-04 | Espacenet |
| JP | JPH06260682A | A | 1994-09-16 | Espacenet |
| JP | JP2713094B2 | B2 | 1998-02-16 | Espacenet |
| JP | JPH06260683A | A | 1994-09-16 | Espacenet |
| JP | JP2713095B2 | B2 | 1998-02-16 | Espacenet |
| JP | JPH06209120A | A | 1994-07-26 | Espacenet |
| JP | JP2809045B2 | B2 | 1998-10-08 | Espacenet |
| KR | KR100289626B1 | B1 | 2001-05-02 | Espacenet |
| KR | KR100406200B1 | B1 | 2004-01-24 | Espacenet |
| KR | KR100406201B1 | B1 | 2004-01-24 | Espacenet |
| KR | KR100445524B1 | B1 | 2004-08-21 | Espacenet |
| KR | KR940012684A | A | 1994-06-24 | Espacenet |
| KR | KR970007135B1 | B1 | 1997-05-02 | Espacenet |
| TW | TW231376B | B | 1994-10-01 | Espacenet |
| US | US2003006424A1 | A1 | 2003-01-09 | Espacenet |
| US | US6791103B2 | B2 | 2004-09-14 | Espacenet |
| US | US2003216011A1 | A1 | 2003-11-20 | Espacenet |
| US | US5578839A | A | 1996-11-26 | Espacenet |
| US | US5734182A | A | 1998-03-31 | Espacenet |
| US | US5747832A | A | 1998-05-05 | Espacenet |
| US | US5880486A | A | 1999-03-09 | Espacenet |
| US | US6078063A | A | 2000-06-20 | Espacenet |
| US | US6215133B1 | B1 | 2001-04-10 | Espacenet |
| US | US6469323B1 | B1 | 2002-10-22 | Espacenet |
Complete European Patent Register Dossier (148 Total Documents)
The full inspection file for Application EP93118670 contains 148 total documents, including all notices of opposition, proprietor counter-statements, examination communications, third-party observations, and procedural forms. Below are all major recorded procedural filings and publication specifications.
Recorded Filings & Patent Specifications
Official publication specifications, opposition filings, proprietor replies, and procedural submissions.